Keywords: Meridiaanikone 4.JPG en Left support pillar counter weights of the meridian circle in the Meridian hall of the Helsinki observatory Made by Reichenbach und Ertel and Utzschneider und Fraunhofer ca 1820-1829 fi Meridiaanikoneen vasemman tukipilarin vastapainot Helsingin observatorion Meridiaanisalissa Reichenback und Ertelin ja Utzschneider und Fraunhoferin noin vuosina 1820-1829 valmistama own MKFI 2012-12-01 Collections of the Helsinki Observatory Meridian instruments 2012 in Helsinki December 2012 in Finland Taken with Canon EOS 60D Taken with Canon EF-S 15-85mm F3 5-5 6 IS USM Utzschneider und Fraunhofer Files by User MKFI |